As winter approaches, it’s a good time to think about your solar PV system’s performance and prepare for the colder months. At TJS Solar, we’re here to help you keep your system running smoothly year-round, ensuring maximum efficiency and savings—even in the heart of winter. In this guide, we’ll explore how winter impacts solar panel performance, tips for winter-proofing your setup, and how additional battery storage and smart energy management can keep you powered up all season long.
How Do Solar Panels Perform in Winter?
In winter, shorter days and reduced sunlight mean your solar panels may produce less electricity than in summer. However, modern solar panels are designed to operate year-round and often perform better in cooler temperatures. While peak sunlight hours decrease ,energy efficiency doesn’t, and with a few small adjustments, you can keep your system producing consistently.
Tips for Winter-Proofing Your Solar PV System
1. Add Extra Solar Battery Storage
During UK winters, shorter daylight hours mean you may need to rely on grid energy more often. Adding additional battery storage to your solar PV system can help you capitalise on lower-cost off-peak energy by storing it for later use. For example, by adding an extra battery, you can store energy from the grid overnight when rates are lower or store solar energy on sunnier winter days. This approach maximises self-consumption and helps you save on energy costs, even with less sunlight.
If you’re curious about adding storage to your solar system, our TJS Solar team can recommend the right amount of battery capacity to fit your energy needs.
2. Switch to a Multi-Rate Tariff
One way to make the most of your solar PV system in winter is to switch to a multi-rate electricity tariff. Multi-rate plans offer cheaper electricity rates during off-peak hours, so you can charge your batteries at night and draw on stored power during the day, reducing reliance on high-cost peak-time energy.
Some electricity providers offer specific tariffs for customers with solar PV systems, even paying premium rates for energy sold back to the grid. Check with your provider or talk to our team at TJS Solar to see which tariff option best suits your setup.
3. Keep Your Panels Clear of Debris
Though solar panels are low-maintenance ,keeping them free of obstructions like leaves or snow will ensure optimal sunlight exposure. Rain generally keeps panels clean, but in winter, leaves, dust, or other debris can build up. It’s a good idea to check your panel so occasionally and clear away anything blocking the sunlight.
If you notice build up that rain doesn’t clear, you can rinse the panels with plain water. Avoid chemical cleaners and consider hiring a professional for a thorough cleaning if needed.
4. Cold Weather Effects on Solar Panels and Batteries
Wondering if cold weather affects your solar panels and batteries? Cold temperatures generally improve panel efficiency but can impact battery performance. Lithium-ion solar batteries have a Battery Management System (BMS) that adjusts charging to protect battery cells in low temperatures. You may notice slightly slower charge rates or reduced battery capacity on extremely cold days. Some batteries will pause charging if internal temperatures fall below freezing, a safety feature that extends battery lifespan.
Most lithium-ion batteries used in solar setups are rated for cold temperatures and perform well when stored properly. Our TJS Solar team recommends installing your batteries in a cool, dry location to maintain stable temperatures and ensure long-term durability.
Preparing Your Solar System for Winter: FAQs
Do Solar Panels Work in Winter?
Yes, solar panels generate electricity year-round. While daily output may be lower in winter, panels are highly efficient in cold weather and will continue providing clean energy through the winter months.
How Much Will My Panels Produce in Winter?
Production varies based on factors like sunlight hours and cloud cover, but you can expect your panels to generate less than in summer. Adding a battery helps you store excess power and use it when sunlight is limited.
Do I Need to Change Battery Settings for Winter?
It’s optional but beneficial. With a multi-rate tariff, you can set your batteries to charge during off-peak hours. Adjusting charge times helps you use cheaper, stored energy and keeps costs low when sunlight is scarce.
How Do I Monitor Battery Temperature?
Most systems allow temperature monitoring through an inverter portal. If you notice issues, consult your manual or reach out to TJS Solar for support.
Winter-Proof Your Solar System with TJS Solar
Considering additional battery storage or simply want to make the most of your solar system this winter? At TJS Solar, we’re here to help. Our experienced team offers expert advice, system upgrades, and personalised recommendations to ensure you get the maximum value from your solar PV system all year.
Contact TJS Solar today to learn more about preparing your solar system for winter.
.png){kind=small}